Test Description
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
- 3: Tests for the proper operation of the circuit in the high voltage range.
- 4: Tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens upon performing this test, the signal circuit has a short to voltage.
DTC B1925 or B2170
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Driver Seat Schematics or Passenger Seat Schematics Connector End View Reference: Power Seat Systems Connector End Views |
||||
| 1 | Did you perform the Diagnostic System Check - Power Seats? | - | Go to Step 2 | Go to Diagnostic System Check - Power Seat Systems |
| 2 |
|
10 V | Go to Step 3 | Go to Step 5 |
| 3 | Measure the voltage between the temperature sensor signal circuit and the temperature sensor low reference circuit. Does the voltage measure near the specified value? |
10 V | Go to Step 4 | Go to Step 7 |
| 4 | Measure the resistance between the temperature sensor signal circuit and the temperature sensor low reference circuit. Does the resistance measure within the specified range? |
535 - 168,000 Ω | Go to Step 9 | Go to Step 8 |
| 5 | Test the temperature sensor signal circuit between the BCM and the sensor connector for a short to ground. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 6 |
| 6 | Test the temperature sensor signal circuit for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 11 |
| 7 | Test the low reference circuit of the temperature sensor for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 11 |
| 8 | Test the temperature sensor signal circuit for a short to battery voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 10 |
| 9 | Test the temperature sensor signal circuit between the sensor connector and the temperature sensor for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
or | Go to Step 14 | Go to Step 11 |
| 10 | Inspect for poor connections at the harness connector of the heated seat temperature sensor. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 12 |
| 11 | Inspect for poor connections at the harness connector of the body control module. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 13 |
| 12 | Replace the heated seat temperature sensor/heater element assembly. Refer to Seat Back Heater Element Replacement - Front and to Seat Cushion Heater Element Replacement - Front . Did you complete the replacement? |
- | Go to Step 14 | - |
| 13 |
IMPORTANT:
Perform the Programing/RPO Configuration for the replacement BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration
in Body Control System. Replace the body control module (BCM). Refer to Body Control Module Replacement
in Body Control System.Did you complete the replacement? |
- | Go to Step 14 | - |
| 14 |
|
- | Go to Step 2 | System OK |